Roll.



E. v. PHEVLPS. ROLL.

APPLICATION FILED 1AN.],1915

1,1?3,736. Patented Feb. 29,1916.

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EDWARD V. PHELPS, F NASHUA, NE HAMPSHIRE, ASSIG-NOR IO IMPROVE!) PAPER MACHINERY COMPANY, OF NASE-IIIA,

MAIN E.

NEW .I-IAIVIPSHIRE, A CORPORATION OF ROLL.

Application filed January 7, 1915.

bodiment of the invention being designed for use as a couch roll for paper making and pulp treating machinery. These rolls are commonly formed from a rigid or semi-rigid core with an applied surface in the form of v. a relatively yielding and more or less fricticnal material. In the construction of these rolls the surfacing is commonly applied by winding on the core a covering composed of one or more strips of suitable material. The material commonly used consists of a woven or other fabric applied to the core in the form of a strip wound thereon in successive helical ccnvolutions to form a' tight, compact fabric surface for the roll.

It is a commen practice to wind on the strip with the assistance of a binding wire or other member, the fabric strip either being longitudinally slit to receive the binding wire or folded on itself so that its edges are directed outward, the surface of the roll being formed by a succession of fabric edges tightly wound and compressed upon the core.

I have found that a roll constructed by winding strips of material thereon, and particularly a roll where the fabric strips are wound with their edges outward, tends to lose its true cylindrical shape under use, or in some cases even before the roll is put to use. This appears to be due to the greater tension applied to and maintained in the outer periphery or edge portion of the strip when woundcn the core. This tends to draw the outer edge of each strip closer to the core and to cause each strip to curl over, the effeet being noticeable in the entire core in a tendency to shrink in diameter at certain points.

The present invention has for its object a winding strip for a roll and the roll itself Specification of Letters Patent.

Patented Feb.. 29?, lf.

Serial No. 1,035.

so constructed and arranged that the tendeney to deform is corrected. This permits the roll when complete to retain its original, p erfect, geometrical shape without deformation or any tendency thereto.

The invention will be best understood by reference to the following description when taken in connection with the accompanying illustration of one specic embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings: Figure l is a side elevatien in partial section showing one end of a couch roll embodying one form of my invention; Fig. 2 is a sectional elevation showing the same roll as is illustrated in Fig. l: Fig. 3 is a portion of a fabric winding strip employed in winding the couch roll shown in Fig. 1; Fig. 4 is a portion of the same winding strip with a binding wire applied thereto; and Fig. shows a portion of the surface of the completed roll on an enlarged scale.

Referring to the drawings and to the illustrative embodiment of the invention therein shown, the core or body of the roll to which the surfacing is applied may be constructed in any desired manner. Herein it consists of the core l of wood or any other suitable material provided with the end plates 2 and having the central shaft 3. To the core are secured strips of lagging 4 extending longitudinally the same and giving the effect of a grooved core. This represents a conventional core construction which is submitted for illustrative purposes only.

To the described or any other suitable form of core there is applied a winding strip of any suitable form and material. As illustrative of one form of winding strip ,I have shown the strip 5 (Figs. 3 and 4) which herein is formed of a coarse fabric, preferably woven in character. The strip is formed of several fabric layers, herein six, stitched together by the double row of stitching indicated at 6. The fabric strip is applied to the core by folding it over (as indicated in Fig. 4) about a binding member 7 of any suitable character. herein lin the form of a metallic wire. To permit the strip to fold readily about the wire and compact lengthwise the core, several of the strips (herein 4) are cut centrally at 8 and opposite the line of fold. This provides the @.56ct of .Scoring so that the strip folds about the lWirewith the edges of the strip in smooth alinement and the sides of the strip being capable of compacting closely on the core. lNith the aid of the binding Wire the fabric strip can be applied evenly, firmly and compactly as'represented in Figs. 1 and 5, so that the outer edges of the fabric form a compact, dense, cylindrical fabric surface. Staples 9 may be applied at intervals over the binding wire to the strips to prevent the Wire from slipping.

To prevent the deformation heretofore referred to, l relieve the circumferential tension to which each convolution of the strip is subjected by the Winding operation by making a series of incisions 10 or slits in each double edge of the Winding strip', these incisions being sutiiciently deep and following each other With sufficient frequency to relieve all'tendency of the strip to occupy anything but a true, radial position. rFliese incisions or slits might be made in the individual layers before being stitched together or might be made vin the edges of the successive convolutions after they are Wound upon the roll, but I find it more convenient to ccnstruct the strip as shown in Fig. 3 complete with the transverse slits 10.

formed herein as Well as the longitudinal slit 8, so that the strip is all ready for Winding on the roll.

Preferably a sufficient number of slits only is made to relieve the unequal tension of the inner and outer edges of the fabric so that when the strip is Wound tightly onthe-l corea solid unbroken surface is presented,y

the position of theslits being scarcely Vor not at all visible.

l/Vhile the transverse slits 10 might be arranged in the strips at right angles to the length thereof, herein, `and preferably, l cut them more or less obliquely. fl"hi s offsets the slit in each layer of the strip from the slitV in. the next adjacent layer and assists in.

making the surface of the core more compact.

lt is tobe understood that, the invention is not limited in its application to the specific form or material of Wind-ingstrip herein shown, but that it has application to Winding strips of other forms: and construe! tion.

While have herein shown and described for purposes of illustration one embodiment of the invention, it is to be understood that the samevis not limited. thereto, but that eX- tensive deviations may be made therefrom Without departing from the spirit ofthe in vention.

Claims:

1. A roll comprising ar coreand a strip of covering material wound spirally about Copies ofrths patent may be obtained for core, saidv strip haty said core,said strip having a series of trans- .verse slits in its circumferential edge.

2. A roll comprising a core, a strip of Vcovering material Wound spirally about said t. A roll having a core, a. strip of covering material ivoundfspirally around said.

l ga .scoring on its under side lengthuf'ised the sanne, a' binding member registering with the scoring,- said strip beingl folded about said binding member' to present, its edges voutwardly and a series of' transverse slits in the circumferential edges of said strip. y y

5..A roll comprising a core,'a 'covering Wrapped around said coreand transverse scoringslits in the circumferential edges of n said covering. Y Y

` 6.' A rollcomprising a core, a` fabric covering Wrapped around said core and transverse scoring yslits. in the circumferential edges of, saidl covering.

'7. A roll; comprisinga core, a covering Wrapped around the` core and scoring incisions infthe covering traIlSyersely the same. 1

8. A roll Acomprising a core Vhaving a surface formed by. the edges 'of-VV successive fabric layers Wrapped around the core and transverse scoring slits in the circumferentialedges of said fabric layers.

9'. A roll comprising, a core, a stripV of coiering; material Wound spirally about said core and a series of slitsl in theNcircumferential edge of saidy covering arranged obliquely the length of-the same.

l10. A roll comprising a core, a strip of coveringvfabric Wound spirally around the core, the. outer,circumferential edges of said fabric being longitudinally discontinuousto relieve the circumferential tension therein.

11. A roll comprising a core, a covering Wrapped under tension aboutsaid core, the outer circumferential edges of said fabricV being longitudinally discontinuous to re-` lieve the circumferential tension therein.

In testimony whereof, l have. signed my name toythis sepcification, in the presence of tvvo subscribing Witnesses. Y

EDWARD v. PHELrs. i

Witnesses:

' ARTHUR J. CONNER,

GEORGE N. ANDREWS.

ve cents each, by addressing the Commissioner ofY Patents, Washington, D. Ck.` 

